﻿// -----------------------------------------------------------------------
// <copyright company="www.3WayWebdesign.de">
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// </copyright>
// 
// <author>Michael Morbach</author>
// <email>Michael@3waywebdesign.de</email>
// <web>http://www.3waywebdesign.de</web>
// ----------------------------------------------------------------------

using System.Collections.ObjectModel;
using System.Windows.Input;
using GalaSoft.MvvmLight.Command;
using Microsoft.Practices.Prism.PubSubEvents;
using Microsoft.Practices.Unity;
using Tww.MAF.MAFEngine.Common.ViewModel;
using Tww.MAF.MAFEngine.Navigation.Browser;
using Tww.MAF.MAFEngine.Navigator;

namespace Tww.MAF.MAFBrowserModule.ViewModel
{
    public class BrowserViewModel : MAFViewModelBase, IBrowserViewModel
    {
        #region  - Konstruktoren -

        public BrowserViewModel(IUnityContainer unityContainer, IEventAggregator eventAggregator)
            : base(unityContainer)
        {
            BrowserEngine = UnityContainer.Resolve<IBrowser>();
            RegisterEvents();
        }

        #endregion

        private ICommand addNewNavigatorCommand;
        public ICommand AddNewNavigatorCommand
        {
            get
            {
                return addNewNavigatorCommand ??
                       (addNewNavigatorCommand = new RelayCommand(() => this.BrowserEngine.AddNewNavigator()));
            }
        }

        #region  - Indexer und Eigenschaften (öffentlich) -

        /// <summary>
        ///     Gets the browser engine.
        /// </summary>
        /// <value>
        ///     The browser engine.
        /// </value>
        public IBrowser BrowserEngine { get; private set; }

        /// <summary>
        ///     Gets the navigators.
        /// </summary>
        /// <value>
        ///     The navigators.
        /// </value>
        public ReadOnlyObservableCollection<INavigator> Navigators
        {
            get { return BrowserEngine.NavigatorList; }
        }

        #endregion

        #region  - Methoden (privat) -

        private void RegisterEvents()
        {
            BrowserEngine.PropertyChanged += (sender, e) => RaisePropertyChanged(e.PropertyName);
        }

        #endregion
    }
}